JPH041125Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a driven roller conveyor used for supporting and transporting loads directly or via pallets.

BACKGROUND ART Conventionally, as this type of roller conveyor, the types shown in FIGS. 10 and 11, for example, have been provided. That is, a pair of left and right support frames 100A and 100B made of C-shaped materials are mounted on the machine frame 101 with their openings facing each other, and the roller 102 supported between both support frames 100A and 100B is fixed to the frame length. Multiple locations are placed in the horizontal direction. The roller 102 is fitted around a roller shaft 103 fixed in a cantilevered manner to one support frame 100B so as to freely rotate.
A passive chain ring 104 is fitted onto the other end of the chain so as to be freely rotatable. A friction transmission body 105 integrated with this passive chain ring 104 is arranged so as to be able to come into contact with the other end surface of the roller 102, and the other support frame 105
A compression spring 107 is provided between the adjusting tool 106 which is disposed to penetrate through A and the other end surface of the passive chain ring 104. The adjustment tool 106 is attached to the support frame 1
The nut 108 installed through 00A and this nut 1
08, and this screw shaft 10.
a spring receiver 110 attached to the inner end of the screw shaft 109; and a fixing nut 111 fitted to the outer end of the screw shaft 109.
The compression spring 1 is
By changing the elastic force of 07, the friction force due to the friction force of the friction transmission body 105 is adjusted. A chain 115 is suspended between a drive chain wheel 113 and a driven chain wheel 114 that are linked to the drive device 112, and a guide device 116 that supports and guides the upper route and the lower route of the chain 115 is connected to the other support frame 1.
It is provided on the 00A side, and the chain 115 in the upper path is engaged with the passive chain ring 104 from below. The support frame 100A, 100
A plurality of Bs are connected in the length direction, and the connection is achieved by fitting the C-shaped connecting frame 117 from the outside between the ends when viewed from the front, and then bolting the connecting frame 117 and the support frames 100A, 100B. - This is done by fixing with a plurality of connectors 118 made of nuts. Also, the connected support frame 100
The end covers of rows A and 100B are made of cover templates 119 that are channel-shaped in plan view, and their leg plates 1
This is done by applying and fitting the leg plates 19a to the outer surfaces of both ends, and fixing the leg plate portions 119a to the support frames 100A and 100B with connectors 120.

According to such a conventional type, the drive device 112
By moving the chain 115 by the operation of the roller, the passive chain ring 104 engaged with the chain 115 is rotated around the roller shaft 103. Since the friction transmission body 105 integrated with the passive chain ring 104 is pressed against the end surface of the roller 102 by the elastic force of the compression spring 107, the roller 102 also rotates, and the pallet (load) is rotated by the rotation of this roller group. ) 121. At this time, palette 12
1 is guided between guide portions 122A and 122B provided inside the upper parts of support frames 100A and 100B, and is conveyed on a fixed path 123. When the pallet 121 is received by a stopper (not shown), the rotation of the roller 102 is stopped and only the friction rotary body 105 rotates in sliding contact against the pressing force of the compression spring 107.

Problems to be solved by the invention According to this conventional type, the friction transmission body 10
An adjustment tool 106 for adjusting the frictional force of roller 1 is attached to roller 1.
A large number of them must be installed corresponding to the installation positions of the 02 group, which makes the structure complicated and the installation (installation)
You will have to adjust them later. In addition, the screw shafts 109 of the numerous adjustment tools 106 and the fixing nuts 1
11 and the like protrude to the outside of the support frame 100A, resulting in poor appearance, and there is also a risk that the human body or clothes may get caught in the protruding parts. Also in the other support frame 100B, the roller shaft 10
3 will protrude outside.

The purpose of this invention is to form the rollers, friction transmission parts, etc. into a unit so that no adjustment is required after installation of the roller unit, and the installation is easy, and the outer surface of the support frame is clean and free of protrusions. The object of the present invention is to provide a roller conveyor that can be used as a surface.

Means for Solving the Problems In order to solve the above-mentioned problems, the roller conveyor of the present invention has rollers and a passive wheel body fitted around the roller shaft, and a friction transmission part between these rollers and the passive wheel body. A mounting bracket is attached to both ends of the roller shaft, and the roller unit is formed by mounting a mounting bracket having an upper connecting plate part that is inclined outward toward the upper end and a lower inserting plate part that is vertical. An engaging piece portion into which the lower insertion plate portion can be inserted from above and an inclined receiving surface onto which the upper connecting plate portion can freely abut from above are formed on the inner surface, and the upper connecting plate portion is attached to a support frame. A fixing connector is provided, and a driving body is provided on the support frame side, with which the passive wheel is interlocked from above.

Effect According to the configuration of the present invention, the roller unit can be installed between the pair of left and right support frames.
This roller unit is lowered vertically to engage the lower insertion plate portions of both mounting brackets with their respective engagement pieces from above, and after bringing the upper connecting plate portion into contact with the inclined receiving surface, This can be done by fixing the upper connecting plate to the support frame using a connecting tool operated diagonally from above perpendicular to the surface, and can be removed by reverse action.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 9.

Reference numeral 1 denotes a roller conveyor, which includes a pair of left and right support frames 10A and 10B, and these support frames 10.
One box-shaped holding frame 2 that supports and fixes A and 10B,
Also, a plurality of frame-shaped holding frames 3 and a plurality of both support frames 1
It is composed of a large number of roller units 30 installed between 0A and 10B, and forms a conveyor path 7.

The support frames 10A and 10B are shaped like frames obtained by pultrusion of aluminum, for example, and are used by being arranged symmetrically. and,
The lower surface forms a downward mounting surface 11,
An inwardly lateral abutment surface 12 is formed below the outer end at right angles to this abutment surface 11 .
A first opening on the lower side is provided in the part forming this contact surface 12.
A dovetail groove part 13 is formed, and a first round hole-shaped dovetail groove part 14 which is open at the bottom is formed at the innermost part (top) of the first dovetail groove part 13.
is formed. Then, the upper part of the outer surface is formed into a recessed step part 15, and the second dovetail groove part 1 which is open to the outside is formed here.
6 is formed, and at the top of this second dovetail groove part 16, a second circular hole-shaped dovetail groove part 17 which is open on the lower side is formed. A third dovetail groove portion 18 that is open at the bottom is formed in the portion that forms the mounting surface 11, and a mounting portion 20 for the return rail 19 is formed in the upper part of this portion. A mounting portion 22 for the working portion rail 21 is formed at an intermediate position in the vertical direction. A vertical receiving surface 23 facing inward is formed above the mounting portion 22 and in the middle in the width direction, and the upper part connected to the vertical receiving surface 23 is formed into an inclined receiving surface 24 that slopes outward toward the upper end. , an inward locking portion 25 is formed at the upper end. An L-shaped engaging piece 26 is formed in the middle of the vertical receiving surface 23 and is open on the upper side, and a fourth dovetail groove 27 is formed in the portion where the inclined receiving surface 24 is formed.

The frame-shaped holding frame 3 consists of a lower leg portion 4 and an upper connecting plate portion 5, and includes support frames 10A and 10B.
is placed on the connecting plate part 5 and the contact surface 12 is placed on the side surface, and then the support frame is fixed by operating the fixing device 6 such as a bolt or nut whose part is fitted into the third dovetail groove part 18. Fix 10A and 10B.

The roller unit 30 includes a roller shaft 31,
A cylindrical roller 33 is externally fitted onto this roller shaft 31 via a bearing 32 and is freely rotatable and slidable, mounting brackets 34A and 34B mounted on both ends of the roller shaft 31, and one mounting bracket 3.
A passive chain ring (an example of a passive ring body) 35 provided between 4A and the end of the roller 33, and a friction transmission part 36
and the other mounting bracket 34B and roller 33.
It is comprised of a lateral push biasing body 37 provided between the ends. Retaining rings 3 are provided near both ends of the roller shaft 31.
8, and insert collar 3 inside one retaining ring 38.
9 and the thrust bearing 40.
5 is fitted on the outside so that it can rotate freely. This passive chain ring 35
A ring-shaped friction plate 42 is attached to the inner side of the drum part 41 that is integrated with the drum part 41, and a flange part 43 formed on the outer ring of one of the bearings 32
The friction transmission section 36 is constructed by being able to come into contact with the friction transmission section 36. Between the washer 44 mounted inside the other retaining ring 38 and the other bearing 32, the lateral pressing member 37, which is made of a coil spring and fits around the roller shaft 31, is mounted. 45 indicates a bearing cover.

The mounting brackets 34A and 34B are integrally molded from resin, and include a vertical lower insertion plate portion 50 that can freely come into contact with the vertical receiving surface 23 and be inserted into the locking portion 25 from above, and an upper connecting plate part 51 which is inclined outward and can freely come into contact with the inclined receiving surface 24 from above; and both plate parts 50,5.
A pair of rib plate portions 52 protruding inward from the side edges of 1.
, a support hole 53 formed in the center of the lower insertion plate part 50 into which the end of the roller shaft 31 can be fitted, and a through hole 54 formed in the center of the upper connection plate part 51. Note that the upper and lower corner portions of both plate portions 50 and 51 are formed into small curved surfaces.

The upper connecting plate portion 51 is supported by a support frame 10A,
A connecting tool 56 for fixing to the 10B side is attached to a plate nut 58 which is installed in the dovetail groove 27 of the body 4 and has screw holes 57 at multiple locations in the length direction, and a through hole 54 formed in the upper connecting plate 51. The bolt 59 can be inserted into the screw hole 57 and fitted into the screw hole 57. Here, the pitch P ₁ of the screw holes 57 is set to be sufficiently smaller than the predetermined pitch P at which the rollers 33 are arranged at the minimum interval.

The support frames 10A, 10B are connected in the longitudinal direction by first circular dovetail grooves 14, 1 facing each other.
This can be done by driving roll pins 61 and 62 between the four holes and between the second circular dovetail grooves 17 and 17, and these roll pins 61 and 62 also serve as positioning.

A rectangular flat cover plate 65 is applied between the end faces of the connected support frames 10A and 10B rows, and is attached by passing a screw member 67 such as a screw into a through hole 66 formed in the cover plate 65. This is done by screwing this screw body 67 into the ends of both round hole-shaped dovetail grooves 14 and 17. At that time, screw holes are automatically formed in both round hole-shaped dovetail grooves 14 and 17.

On the side of one row of support frames 10A, a driving chain wheel 70 is disposed at one end in the length direction, and a driven chain wheel 71 is disposed at the other end. A chain 73, which is an example of a driving body, is wound around both chains 70 and 71 with a tension device 72 interposed therebetween, and the drive chain 70 is provided within the box-shaped holding frame 2. It is operatively connected to a drive device 74 via an endless transmission device 75. The chain 73 is connected to both rails 1
The rails 19 and 21 are supported and guided, therefore, the rails 19 and 21 are disposed only on one row of support frames 10A.

The guide frames 80A and 80B, which are detachably attached to the upper portions of the support frames 10A and 10B, are also shaped like molds obtained by pultrusion of aluminum, and are arranged symmetrically in use. A dovetail groove portion 81 that is open to the outside is formed on the outer surface, and a plurality of fitting portions 82 that are circular hole-shaped dovetail grooves that are open to the inside are formed in the empty interior along the length direction. Furthermore, from the lower part of the inner surface side, the passive wheel body 3
A hanging part 83 facing the inside of the upper part of the housing 5 is integrally formed. The guide frames 80A, 80B are attached to the support frames 10A, 10B from the outer surface of the guide frames 80A, 80B to the stepped portion 1.
5, and then tighten the bolts and nuts 85 provided between the second dovetail groove 16 and the connection plate 84, and tighten the bolts and nuts 85 provided between the dovetail groove 81 and the connection plate 84. This is done by tightening the nut 86. The guide frames 80A, 8
The connection in the length direction of 0B is made using the opposing fitting parts 8.
A roll pin 87 which is an example of a connecting body between two
This can be done by driving the roll pin 87.
also plays a role in positioning.

A guide ring 46 is externally fitted and fixed to the roller 30 at a position slightly inside the end surface thereof.
Between these guide rings 46, the narrow tray 8, which is an example of an object to be transported, is supported and transported while being centered. Further, the wide tray 9 is supported and conveyed via the guide ring 46 while being centered by both guide frames 80A and 80B.

Next, the operation of the above embodiment will be explained.

First, the assembly work of the conveyor frame will be explained. The connection in the length direction of the support frames 10A and 10B is achieved by driving a roll pin 61 between the first circular hole-shaped dovetail grooves 14 that face each other, and
This is done by driving the roll pin 62 between the round hole-shaped dovetail grooves 17, and since the roll pins 61 and 62 play a positioning role at this time, the vertical and horizontal directions at the connecting part of the support frames 10A and 10B are No displacement occurs. Both support frames 10A and 10B rows are set on the respective holding frames 2 and 3 and are integrated via fixtures 6. By abutting the abutting surfaces 12 at this time, the distance between the left and right support frames 10A, 10B is set. Next, a cover plate 65 is applied between the end faces of the rows of support frames 10A and 10B, and a screw body 67 passed through the through hole 66 from the outside is inserted between the first round hole dovetail groove 14 and the second round hole dovetail groove. The cover plate 65 is attached by screwing into the groove 17.
At that time, the screw body 67
7 is threaded, so that attachment via the threaded body 67 can be performed with sufficient strength.

The drive device 74, chain 73, etc. are set on the conveyor frame thus assembled.

Next, the roller unit 30 is installed. In this roller unit 30, mounting brackets 34A and 34B are tightly fitted onto both ends of a roller shaft 31, and a roller 33 and the like are positioned between retaining rings 38. At this time, the friction force in the friction transmission section 36 is determined by the elastic force of the lateral push biasing body 37, and this can be adjusted by, for example, replacing the collar 39 or the washer 44 to make the wall thickness different. This allows adjustments to be made before installation, and eliminates the need for adjustments after installation. Roll unit 3 before installation
0 is positioned above the mounting position as shown in phantom in FIG. 1 and is lowered vertically. Then, the lower insertion plate part 50 is guided to the vertical receiving surface 23, and the lower end is inserted into the engagement piece part 26 from above. On the way, the locking portion 2
5 and descends, and then the upper connecting plate part 51
is in contact with the inclined receiving surface 24 and the locking portion 25
is locked. Next, after some positional correction along the conveyor path 7, the through hole 5 is opened by an operation from diagonally above orthogonal to the inclined receiving surface 24.
Both mounting brackets 3
The roller unit 30 can be fixed via 4A and 34B, and at this time, the lower part of the passive wheel body 35 is connected to the chain 7.
Bite to 3.

Next, the guide frames 80A and 80B are attached. That is, the guide frame 80A,
The connection in the length direction of 80B is performed by driving a roll pin 87 between the opposing fitting parts 62, and since the roll pin 87 plays a positioning role at this time, the guide frame 80
No displacement occurs in the vertical and horizontal directions at the connecting portions A and 80B. Both support frames 10A, 10
A connecting plate 84 is applied to the stepped portion 15 of B, and is integrated with bolts and nuts 85. Then, the guide frames 80A and 80B rows are placed on the support frames 10A and 10B rows, and the bolts and nuts 8
6 is integrated into the connecting plate 84. This completes the assembly as shown by the solid line in FIG. 1, and at this time the hanging portion 83 faces the inside of the upper part of the passive chain ring 35.

In this way, the trays 8 and 9 can be transported with the pitch between the rollers 33 set to the minimum predetermined pitch P, as shown in FIG. 8, for example. That is, by moving the chain 73 by operating the drive device 74, each passive chain ring 35 meshing with the chain 73 is rotated around the roller shaft 31. Since the flange 43 on the roller 33 side is pressed against the friction transmission part 36 integrated with the passive chain ring 35 via the drum part 41 by the elastic force of the lateral push biasing body 37, the frictional force through roller 33
The rollers 33 also rotate, and the trays 8 and 9 are conveyed by the rotation of the group of rollers 33. At this time, narrow tray 8
The wide tray 9 is guided between a pair of guide rings 46 and supported by rollers 33 and conveyed on the conveyor path 7, and the wide tray 9 is guided between a pair of guide frames 80A and 80B and is conveyed between both guide rings 46.
It is supported and transported via the During such transportation, when the transported objects and dust on the trays 8 and 9 fall to the side, the falling objects hit the hanging portion 83 and are prevented from moving toward the passive chain ring 35 side. Become. When the trays 8 and 9 are received by a stopper (not shown), the friction conveyance force on the roller 33 side against the trays 8 and 9 is greater than the friction force of the friction transmission part 36 due to the elastic force of the lateral push biasing body 37. Since the friction plate 42 becomes large, the friction plate 42 rotates in sliding contact with the flange portion 43. As a result, the passive wheel body 3
Although the trays 5 are constantly rotating, the rotation of the rollers 33 is stopped, and the trays 8 and 9 are stored without sliding contact with the lower surfaces thereof.

When transporting the long trays 8, 9, the predetermined pitch P described above is changed. That is, first, the bolt/nut 86 is removed and both guide frames 80, 80B are removed. After removing the bolt 59 of the connecting member 56, the roller unit 30 is removed upward while removing the upper connecting plate portion 51 from the locking portion 25 against the elastic force. Next, as described above, the roller unit 30 is installed at a location corresponding to the new pitch, and the guide frames 80A and 80B are also installed. At that time, the roller unit 30 can be installed based on the pitch _P1 of the screw hole 57 in the plate nut 58, which is a small pitch, and therefore,
For example, as shown in FIG. 9, an almost arbitrary predetermined pitch P can be obtained.

When changing the pitch, it is not necessary to remove all the roller units 30 upward. That is, after a certain number of roller units 30 have been removed upwardly, some of the roller units 30 can be slid along the conveyor path 7 with the bolts 59 removed. At this time, the passive chain ring 35 side rotates freely with respect to the chain 73.

Effects of the Invention According to the present invention having the above configuration, the roller unit is installed by lowering the roller unit vertically to engage the lower insertion plate portions of both mounting brackets from above the respective engaging pieces, and then This is done by bringing the connecting plate into contact with the inclined receiving surface, and then fixing the upper connecting plate to the pair of left and right support frames using a connecting tool that is operated diagonally from above and perpendicular to the inclined receiving surface. and removal can be carried out by reverse action. As a result, attachment and detachment can be easily performed by simple operations without being hindered by rollers, etc., and the attachment posture can be firmly maintained without wobbling. By adjusting the friction force of the friction transmission part when unitizing it, it is possible to eliminate the need for adjustment after installation.Furthermore, since there is no external adjustment structure, the outer surface of the support frame is a clean surface with no protrusions. can do.

[Brief explanation of drawings]

Figures 1 to 9 show an embodiment of the present invention, with Figure 1 being a longitudinal sectional front view, Figure 2 being an enlarged view of the main parts in Figure 1, and Figure 3 showing the main parts with the cross-sectional position shifted. Figure 4 is a front view of the mounting bracket.
Fig. 5 is a side view of the same, Fig. 6 is a plan view of the same, Fig. 7 is a longitudinal sectional front view of the same, Fig. 8 is a schematic side view with a partial cutout of the whole, and Fig. 9 is a schematic side view showing a change in pitch. , FIG. 10 is a longitudinal sectional front view of the main part showing the conventional example, and FIG.
The figure is a partially cutaway schematic side view of the whole. 1...Roller conveyor, 7...Conveyor route,
8...Narrow width tray, 9...Wide tray, 10A,
10B... Support frame, 21... Rail for action section, 23... Vertical receiving surface, 24... Inclined receiving surface,
25... Locking part, 26... Engaging piece part, 27... Fourth dovetail groove part, 30... Roller unit, 31... Roller shaft, 33... Roller, 34A, 34B... Mounting bracket, 35... ...passive chain ring (passive chain ring),
36... Friction transmission part, 37... Lateral push biasing body, 3
9... Collar, 42... Friction plate, 43... Flange,
44... Watshiya, 46... Guide ring, 50
...lower insertion plate section, 51 ...upper connection plate section, 5
3...Support hole, 54...Through hole, 56...Connector, 57...Screw hole, 58...Plate nut, 59
...Bolt, 73...Chain (driving body), 74...
...Drive device, 80A, 80B...Guide frame.

Claims (1)

[Scope of utility model registration request] A roller and a passive wheel are fitted onto the roller shaft, and a friction transmission section is provided between these rollers and the passive wheel, and an upper connecting plate section is provided at both ends of the roller shaft and is inclined outward toward the upper end. A mounting bracket having a vertical lower insertion plate part is attached to form a roller unit, and an engaging piece part into which the lower insertion plate part can be freely inserted from above is provided on the inner surface of the pair of left and right support frames; The upper connecting plate portion forms an inclined receiving surface that can be freely contacted from above, and a connecting tool is provided for fixing the upper connecting plate portion to the support frame. A roller conveyor characterized by being installed on the side.